package com.itheima.reggie.config;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ser.std.ToStringSerializer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.jackson.Jackson2ObjectMapperBuilderCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

/**
 * @author ：sean
 * @date ：Created in 2022/5/16
 * @description ：
 * @version: 1.0
 */
@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {


	/**
	 * 设置静态资源映射
	 * @param registry
	 */
	@Override
	protected void addResourceHandlers(ResourceHandlerRegistry registry) {
		log.info("开始进行静态资源映射...");
		registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
		registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
	}

	@Autowired
	private ObjectMapper objectMapper;
	@Override
	protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
		log.info("扩展消息转换器...");
		//创建消息转换器对象
		MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
		//设置对象转换器，底层使用Jackson将Java对象转为json
		//messageConverter.setObjectMapper(new JacksonObjectMapper());
		 messageConverter.setObjectMapper(objectMapper);
		 //
		//将上面的消息转换器对象追加到mvc框架的转换器集合中
		converters.add(0,messageConverter);
	}


	@Bean
	public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
		Jackson2ObjectMapperBuilderCustomizer customizer = jacksonObjectMapperBuilder ->
			jacksonObjectMapperBuilder
				.serializerByType(Long.class, ToStringSerializer.instance)
				.serializerByType(Long.TYPE, ToStringSerializer.instance);
		return customizer;
	}
}
